Description of problem:

I need to be able to easily stop the serving of a model(s) without having to delete things. 

In the Serving UI, I can currently not ask for less than 1 replica. 

If I could, asking for zero replica will remove all the pods and achieve exactly what I need.

This is useful when working in multiple namespaces in a cluster that is limited in resources. 

Prerequisites (if any, like setup, operators/versions):

RHODS 1.23. 

Steps to Reproduce

1. try to set the number of replicas to zero
2. 

Actual results:

You can't

Expected results:

You should be able to

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

Chris's live build 1.23-w1. 

Workaround:

Having to manually edit the CR.

Additional info: